Effect of alloying on the giant magnetocaloric effect of Gd-5(Si2Ge2)

被引：332

作者：

Pecharsky, VK ^{[1
]}

Gschneidner, KA ^{[1
]}

机构：

[1] IOWA STATE UNIV SCI & TECHNOL,DEPT MAT SCI & ENGN,AMES,IA 50011

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1997年 / 167卷 / 03期

关键词：

magnetocaloric effect; alloying; substitution effect;

D O I：

10.1016/S0304-8853(96)00759-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A study of the effect of different alloying additions substituting for nonmagnetic Si and Ge on the giant magnetocaloric effect observed for the compound Gd-5(Si2Ge2) revealed that small amounts (similar to 0.33 at%) of Ga raise the Curie temperature and preserve the giant magnetocaloric effect. Larger quantities of Ga lead to a significant reduction in the magnetocaloric effect, but the Curie temperature continues to rise. Many 3d-metal and p-element additions also reduce the magnetocaloric effect in Gd-5(Si2Ge2) due to the changes in the thermodynamic nature of the magnetic phase transition. In general, all alloying additions raise the Curie temperature of the parent Gd-5(Si2Ge2).

引用

页码：L179 / L184

页数：6